Hydrocarbon-lamp.



Patented A111120, 1909.

attenua? M. W. PITNER. HYDROGARBON LAMP. APPLICATION FILED MAY 29, I907.

MARION W.A PITNER, OF CHICAGO, ILLINOIS.

HYDROCARBON-LAMP.

Specification of Letters Patent.

Patented April 2o, 1909.

Application filed May 29, 1907. Serial No. 376,311.

To all whom it may concern:

Be it known that I, MARION W. PITNER, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Hydrocarbon-Lamps, of which the following is a specification.

This invention relates to vapor burning lamps of the incandescent mantle type which generates its supply of vapor from liquid hydro-carbon and relates more particulalrly to a multiple mantle burner having a common generator for supplying the combustible mixture to the mantles.

The invention has for one of its objects to improve and simplify the construction and operation of apparatus of this character so as to be comparatively easy and inexpensive to manufacture, thoroughly reliable, efficient and economical in service; and composed of comparatively few parts and adapted for use in single or cluster burner fixtures.

A further object of the invention is the provision of a lamp comprising a vaporizer that serves as a support for the burner body and which is so disposed as to be efIiciently heated by the hot gases rising from the mantles.

Another object is the provision of a lamp comprising a vaporizer of tubular form bent back on itself to thereby form an effective support for the burner body and to provide a comparatively great length of vaporizing tube within the heat zone of the lamp, the burner body being ol' inverted U -shaped form and connected with the vaporizer to receive the vapor mixture therefrom.

A still further object is the construction ol' a multiple mantle burner body preferably formed as a casting with branched passages leading from a vapor inlet and provided with means for adj ustably supporting the body on the vaporizer that is itself connected with the vapor inlet.

Yivith these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described and set forth with particularity in the claims appended hereto.

In the accompanying drawing, which illustratesV one of the embodiments of the invention :-l"igure l is a side elevation of the lamp having a single bend vaporizer. Fig. 2 is a side elevation` ofga modified form including; a

double bend vaporizer. Fig. 3 is an end view of the burner body. Fig. 4 is a plan view of one of the perforated disks at the discharge end of each passage of the burner body for preventing the burning back of the fiame.

Similar reference characters are employed to designate corresponding parts throughout the several views.

In the present instance, I have elected to illustrate the invention, as embodied for use in single or cluster burner fixtures of any approved style.

Referring to the drawing, A designates the vaporizer of the lamp, B, the burner body; and C, the mixing tube intermediate and connecting the vaporizer and burner body. The vaporizer comprises a suitable length of tubing provided with a bend 1 at one end that connects with the mixer O, as shown in Fig. 1. In Fig. 2, the vaporizer is doubled back on itself to form a horizontal under portion 2. The inlet end of the vaporizer is connected by a valve D with a head E of the supporting pi e of the fixture. As shown in TEig. 2, the va ve D comprises a casing 3 that screws into the head E and communicates with the chamber 4 of the latter and the inlet-end of the vaporizer is threaded into the valve casing. The liquid hydro-carbon in passing from the supply pipe through the passage 4i in the head to the valve casing is strained by a gauze screen 5 fitted into the inlet end ofthe casing, and the supply of fuel is controlled by' a needle valve 6 arranged. within the plug 7 that is brazed or otherwise suitably secured to the casing, there being a passage 8 in the plug that is controlled by the valve 6. TWithin the vaporizer A is a suitable length of asbestos cord 9 Vthat only partially fills the bore of the vaporizer so that the liquid hydrocarbon can freely flow through the generator and be gradually vaporized.

The burner body B preferably comprises a metal casting which, according to one embodiment, takes the form of an inverted U, as clearly shown in Fig. 3. Between the legs 10 is aweb 11 that has an opening 12 whereby the burner body can be inserted on the vaporizer. In Fig. 1, the burner body is shown mounted on the main portion of the vaporizer A, while in Fig. 2, it is shown mounted on the bent-back portion 2, the main or body part of the generator or vaporizer being disposed vertically above the portion 2. The burner body is provided with an inlet 13 in one side at the top, and a threaded boss 14 at the said opening receives one end of the two tubular members 19 and 20 ofthe mixer' mixer C. Each leg 10 has a longitudinal bore 15 through which the gas mixture is conducted from the inlet 13 to the mantle 16 attached to the lower end of each leg. The bottom portions of the legs are counterbored and threaded at 17 for the reception of perforated or slotted disks 18 that are of substantial dimensions so as not to be readily heated for checking the burning bacl: of the flame into the burner body and for promoting quiet burning of the lamp.

The mixer C comprises an inner tubular member 19 that is threaded at one end into the tapped boss 14 of the burner body and telescopes at its opposite end in a second tubular member 2O which is secured to the discharge end of the vaporizer, the second tubular member having air inlet openings 21 for admitting air to be mixed with the vapor discharged from the vaporizer. The burner body is free to move back and forth on the vaporizer and as the tubular member 19 of the mixer is attached to the burner body, it will also move with the latter so that the inlet openings 21 can be made larger or smaller for regulating the amount of air admitted. To hold the burner body in iixed position, the web 11 has a set screw 22 that extends into the opening 12, as shown in Fig. 5, and is adapted to bind on the vaporizer and thereby hold the burner body in fixed position. In the construction shown in Fig. 1, the outer tube 20 is connected with the vaporizer A through a cap nut 23 threaded on the latter, which cap nut has a restricted discharge opening, thus forming a nozzle whereby the vapor will be delivered into the mixer at a comparatively high velocity so that a good injector action is produced for drawing in the necessary quantity of air to produce a perfeet mixture. In assembling or removing the burner body from the simple form of vaporizer shown in Fig. 1, it is merely necessary to slide the burner body on or ott the vaporizer at the inlet end that screws into the valve D. In the form shown in Fig. 2, it is necessary to provide a breakable connection between the mixer C and discharge end of the vaporizer.

For this purpose, the vaporizer screws into a 1,

hollow ball fitting 24 that is connected by a coupling 25 with a second ball iitting 26 that has a threaded boss 27 that screws into the cap nut 23. The cap nut has a central contracted discharge opening 28 over which is a screen 29 of any suitable form that serves to prevent sediment or particles in the mixture from clogging the nozzle passage 28 or passing into the burner. To remove the burner body should occasion require, the cap nut er nozzle 23 can be unscrewed from the part 27 and then the fitting 24 and attached parts are connected in telescoping relation, the member 2O will freely rotate when detaching or attaching the nozzle 23.

In a lamp of the character described, the vaporizer constitutes the sole support for the burner body and attached parts and no extra supporting arms are required for mounting the burner on a fixture, rlhe lamp is of comparatively' simple and inexpensive construction and is composed of few parts that can be easily made and assembled, ln the present instance, the lamp is shown without provision for supporting a globe, shade or chimney and without attachments of this character, a cheap lamp is provided suitable for factory and similar uses. lf desired, however, any suitable shade or chimney supporting means may be applied.

From the foregoing description, taken in connection with the accompanying drawing, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while l have described the principle ot' operation of the invention, together with the apparatus which I now consider to be the best embodiment thereof, I desire to have it understood that the apparatus shown is merely illustrative and that such changes may be made when desired as are within the scope of the claims.

Having thus described the invention, what l claim is 1. The combination of a vaporizer having a horizontally-extending portion, a burner body slidably mounted directly on the vaporizer and movable laterally, means for clamping the burner in adjusted position on the vaporizer, inverted mantles attached to and depending from the burner body, and a mixing device arranged between the burner body and the discharge end of the vaporizer and provided with inlet openings, said mixing device consisting of two parts relatively adjustable with the burner body for varying the ellective air inlet'area of the said openings,

Q The combination of a vaporizer, an inverted U-shaped burner body having a plurality of downwardly-discharging passages and a common inlet opening at the top communicating with the passages,- screens Within the lower ends of the said passages, means for attaching inverted mantles to the burner body over the discharge ends of the passages thereof, said burner body being slidably mounted on the vaporizer and straddling the latter, and a mixing device connected with the inlet opening of the burner body and with the discharge end of the vaporizer.

3. The combination of a horizontally-extending vaporizer, a burner body having an unscrewed from the extremity of the vapoi opening through which the vaporizer extends rizer, thereby permitting the burner body and for slidably mounting the burner body on the mixer to be slid ott the portion 2.

As the latter, a clamping means attached to the burner body and arranged to engage the vaporizer, and a mixing device connecting the vaporizer with the burner body and serving to prevent the burner body from turning on the vaporizer.

4. The combination of a vaporizer having a return bend at one end, a burner body having a downwardly-discharging passage and rovided with an o eninO through which the vaporizer extends, said burner body being adjustable longitudinally of the vaporizer, means for attaching an inverted mantle to the burner body over the discharge end of the passage thereof, and a mixing device connected with the discharge end of the vaporizer and with'the said passage of the burner body, said mixing device consisting of a tube rigidly connected with the vaporizer and disposed parallel therewith, and a second tube rigidly connected with the burner body and in testimony whereof, l aHiX my signature` in presence of two witnesses.

MARGN W. PITNER.

lditnesses:

JOHN L. FLETCHER, CHATTIE BRADwAY. 

